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Finding the Fourth Proportional to 7,289.35, 10,939.35 and 2,908.06

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Solution

The fourth proportional to 7,289.35, 10,939.35 and 2,908.06 is: 4,364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,289.35 : 10,939.35 = 2,908.06 : x
  2. Step 2: Convert to fraction form
    7,289.35/10,939.35 = 2,908.06/x
  3. Step 3: Cross multiply
    7,289.35x = 10,939.35 × 2,908.06
  4. Step 4: Simplify right side
    7,289.35x = 31,812,286.16
  5. Step 5: Solve for x
    x = 31,812,286.16/7,289.35
  6. Step 6: Final answer
    x = 4,364.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.